Stormwater Management Manual

The City of Tacoma regularly updates its Stormwater Management Manual (previously called the Surface Water Management Manual) to comply with the most recent National Pollutant Discharge Elimination System (NPDES) permit, to clarify information and to incorporate updated policies.

If you have questions or concerns about the Stormwater Management Manual or don't know which version of the manual is applicable to your project, please contact Environmental Services at (253) 591-5218.

2016 Stormwater Management Manual (SWMM)

In July 2016, the Stormwater Management Manual (SWMM) was updated to clarify requirements and fix text errors throughout the document. The 2016 Errata Overview shows all changes made to the manual in redline form. The July 2016 version of the SWMM is applicable to projects vested beginning August 1, 2016.